package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import javax.naming.InsufficientResourcesException;
import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"paymentInfo_OK,id"+id+"\t"+"哈哈";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_Timeout(Integer id){
        int timeOut = 5;
        try {
            TimeUnit.SECONDS.sleep(timeOut);
        }catch (InterruptedException e){
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()
                +"paymentInfo_Timeout,id"+id+"\t"+"耗时"+timeOut+"秒";
    }

    public String paymentInfo_TimeoutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()
                +"系统繁忙,id"+id+"\t"+"GG了";
    }

    @HystrixCommand(fallbackMethod = "paymentCircuitBreakerFallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value ="true"), // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60") // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Long id){
        if (id < 0){
            throw new RuntimeException("id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功"+serialNumber;
    }

    public String paymentCircuitBreakerFallback(@PathVariable("id")Long id){
        return "id不能为负数";
    }
}
